I have an 03 EX-L. Hearing a pronounced thumping-like noise from the rear of the van and also sometimes the front. We've never noticed this noise in the 4 years we've had this van. We have 51,000 miles on it now. The noise generally is heard when turning at low speeds, but it doesn't always make the sound every time we turn. Any ideas or opinions on what it could be? I've done several searches on this and have read a lot of posts but would like opinions. If it were the gasoline, we would have heard that during the last 4 years.